Question

According to the electromagnetic wave theory, light consists of electric and magnetic fields which are __________.

• A. parallel to each other
• B. perpendicular to each other
• C. inclined at an angle of ${45}^o$ to each other
• D. none of these

Answer 1

The correct option is B perpendicular to each other

Light consists of electric and magnetic field that are perpendicular ${90}^0$ to each other.
APPOACH by example
Electric field inside plates. The magnetic field this given rise to via the displacement current is along the perimeter of the circle parallel to capauatates plates.

So B and E are perpendicular in this case.